According to info on cc license the audio file is licensed under the cc license it used when it was downloaded. Now heres the thing, one of the samples i have downloaded has changed its license to cc-by-nc. It was under sampling+ when i downloaded it.

So, how do i prove this to people such as the uploader, youtube etc if i use it commercially under the sampling+ license. I have decided not to use it till this is cleared up.

I dislike this option that people have to add restrictions after thousands of people downloaded it when it was freely usable in any project.

This is a difficult one, and we discussed this quite a bit... You can obviously use the sample under the original license, as you downloaded it under that license.

Nothing stops an author from changing a license of a sample - it is HIS sample, he can do whatever (s)he wants with it. But nothing stops you from using it under the first license it was released under.

- bram

Warning: if you break the rules, see my avatar.
Freesound Admin, Moderator, Ex-Freesound-Coder & Benevolent Dictator For Life.

You would need to have something like a license history on the sample's page. But it needs to be clear that who downloads it now, can't cheat and say they downloaded it 5 months ago, when it was still under a different license.